RöFo : Fortschritte auf dem Gebiete der Röntgenstrahlen und der Nuklearmedizin
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Comparative Study
[Comparison of gradient-echo and steady state free precession sequences for 3D-navigator MR angiography of coronary arteries].
Purpose of our study was to compare the image quality of 3D-navigator steady state free precession (SSFP) and gradient echo (GE) sequences for magnetic resonance coronary angiography (MRCA) in volunteers and patients. ⋯ The 3D-navigator SSFP sequence is a promising new technique for MRCA which improves the contrast between the coronaries and the myocardium and shortens the data acquisition compared to gradient-echo imaging.
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To evaluate different concepts of the application of a portable CT (PCT) directly in a patient's ICU room versus in a specially designed interventional suite (IS). ⋯ PCT performed on an ICU assures optimal treatment of patients during CT examination. Portable CT had more time exposure and required more personnel resources than examination in the IS. All PCT examinations performed directly in the patient's room demonstrated the diagnostic value and had direct therapeutic consequences.
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The VIBE (volume interpolated breath-hold examination) sequence in combination with parallel acquisition technique (iPAT: integrated parallel acquisition technique) allows dynamic contrast-enhanced MRI of the liver with high temporal and spatial resolution. The aim of this study was to obtain first clinical experience with this technique for the detection and characterization of focal liver lesions. ⋯ VIBE with iPAT allows MR imaging of the liver with high spatial and temporal resolution providing dynamic contrast-enhanced information about the whole liver. This may lead to improved detection of liver lesions, especially hepatocellular carcinoma.
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A new magnetic resonance imaging approach for detection of myocardial late enhancement during free-breathing was developed. ⋯ With the presented navigator-gated and real-time motion corrected sequence for MR-imaging of myocardial late enhancement data can be completely acquired during free-breathing. Time constraints of a breath-hold technique are abolished and optimized patient specific inversion time is ensured.
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To investigate the safety and efficacy of emergency treatment of acute aortic diseases with endovascular stent grafts. ⋯ Endovascular treatment is safe and effective for emergency treatment of life-threatening complications in selected acute aortic syndromes. Mid-term results are encouraging, however, regular follow-up is mandatory to recognize late complications of the stent graft.